Wire-bending device.



M. D. KILMER.

WIRE BENDING DEVICE.

APPLICATION FILED JAN.2. 1912.

Patented Apr. 2, 1918.

MELVIN 1).KIL1VIER, 0F CLEVELAND, OHIO.

WIBE-BENDING DEVICE.

Specification of Letters Patent.

Patented Apr. 2, 1918.

Application filed January 2, 1917. Serial No. 140,065.

To all whom it may concern:

Be it known that I, MELVIN D. KILMER, a citizen of the United States, resident of Cleveland, county of Cuyahoga, and State of Ohio, have invented new and useful Improvements in Wire-Bending Devices, of which the following is a specification, the principle of the invention being herein explained and the best mode in which I have contemplated applying that principle, so as to distinguish it from other inventions.

My invention relates to devices for bending wire, its object being to provide a device of this character which will be simple and economical in structure, eflicient in operation and lend itself to the making of an unlimited number of accurate forms from wire and other material.

The annexed drawing and the following description set forth in detail certain means embodying my invention, the disclosed means, however, constituting but one of various mechanical forms in which the principle of the invention may be employed.

In said annexed drawing Figure 1 represents a front elevation of my new and improved wire bending device; Fig. 2 represents a central longitudinal section thereof taken in the plane indicated by the line 11-11, Fig. 1; Fig. 3 represents a partial front elevation of certain elements of said device when the crank portion thereof has been carried to its extreme operative position; Fig. 4; represents a partial front elevation when said crank has been retracted and carried back to its other extreme position; and Figs. 5 and 6 represent details of an arbor and an oscillatory member hereinafter fully described.

My invention, as illustrated, consists of a main frame 1 preferably of cast iron. The

1 lower portion of this frame is provided with a transverse shoulder 2 which in conjunction with a bolt (not shown) passing through a hole 3, may securely fix the device to a bench or table, as will be readily understood.

The other end of the frame 1 is formed with a circular depression 1 intersected by bore 5. Seated in this depression 4 is a cylindrical member 6 formed with a cylindrical hollow stem 7 disposed in the bore 5. The

, hollow stem 7 is fastened by means of screw 8 to a bushing 9 formed upon the inner end of a crank-handle 10. Contained wlthin the hollow stem 7 by means of a screw 11 is an arbor 12 formed with a plurality of sections 13 of varying cross-sectional areas, by means of shoulders 1 1 whereby different sizes of eyes 23 may be formed. Projecting from the face of the cylindrical member 6 and transversely adjustable relatively to the arbor 12 is a short hard steel pin 15. This' transverse adjustment is secured by reason of said pin 15 being mounted in a plate 16 which is contained in a depression 17 in the cylindrical member 6, such pin 15 being further, vertically adjustable in the plate 16 and is held to the properly adjusted position by means of set screw 18 to which said screw access is obtained by means of a countersunk portion 19 in the cylindrical member 6, as plainly seen in Fig. 1. A strap 20 is secured to the periphery of the member 6 and is intersected by a screw 21, which works in the plate 16 to effect the transverse adjustment of the latter. The distance between the pin 15 and that section 13 of the arbor which happens to be in use, is made such as to allow the wire 22 to just pass between section 13 and pin 15. The frame 1 is formed with two lugs 24 receiving screws 25, which provide adjustable stops limiting the oscillatory movement of a member 26, as will be hereinafter fully described. This oscillatory member 26 comprises two relatively adjustable portions 27 and 28 intersected and joined by screws 29 by means of which such adjustment is obtained, a third screw 30 intersecting the portion 28 and being withdrawn from contact with the member 7 when an adjustment is being made and being screwed up into tight contact with said member 27 when the proper adjustment has been secured. This adjustment is for the purpose of providing a groove 31 of the proper size to receive the wire which is to be bent. The frame 1 is intersected by a longitudinal groove 32, Fig. 2, disposed centrally of the longitudinal axis of the member 26, and by which said member 26 is oscillatorily secured to the frame 1 through the medium of bolt 33 and is further thereby made adjustable longitudinally of the frame. A look nut 38 is also provided, as shown.

The surface of that part of the frame 1 beyond the cylindrical member 6 is graduated, as shown, to indicate inches beyond the pins 15 and the arbor 12, and this surface is so located as to be in proximity to the wire 22 when the latter is in the holding member 26, and extends beyond the end of the latter, as shown in dotted line in Fig. 1.

The device as thus far described operates order to insure the proper amount of ofisetofthfe eye 23, the frame 1 is provided with a lug 34 containing a transverse groove and an adjustable pin 36 which is located in the path of movement of the crank 10, whereby when saidcrank is brought around in the direction opposite to that indicated by the arrow and carried in the position illustrated in Fig. 1; the pin 15 bends the wire to form the eye of desired shape as shown in Fig. 4".

When it is desired to impart a given angularit'y to the bent portion of the wire 23, I

provide an additional gage37 for indicating such angularity, as shown in Fig. 1. This gageis formed by providing an extension of the frame as shown and marking thereon a series of lines coinciding with the radii of a circle having its center on the axis of the arbor 12. It will therefore be seen that the end portion of a wire projecting beyond the arbor 12 and pin 15 may be bent around so as to coincide with one end of the radiating lines and the angularity desired thus impartedg Ashas been before noted, the two screws 25 contained within the two lugs 24: provide adjustable stops for limiting the oscillatory movement of the member 26, which limitation is necessary for effecting the bending operation, for the reason that at sometime during suchoperation, the wire must be held against movement in a direction transverse with respect to its axis.

It will be apparent from the accompanying drawing and the preceding description that I have provided a device of this character which is simple and efiicient and by means of the varied adjustments shown and described is capable of readily lending itself to the making of a great number of accurate forms. 7

Having fully describedmy invention,

' what I claim and desire to secure by Letters Patent is p p 1. In a wire bending device, the combination of'a frame member; an oscillatory member provided with a groove for therec'ept'ion of a wire; means for limiting the oscillation of said member; and a rotatory membe'r'provided with means for gripping that portion of the wire extending from said groove.

2. In a wire bending device, the combination of a main frame member; an oscillatory member provided with means for the reception of wires of varying sizes, means for limiting the oscillation of said member; and a rotatory member provided with adjustable meansfor gripping that portion of the wire extending from said oscillatory member.

3. In a wire bending device, the com'binaiion of a main frame member; an oscillatory member provided with means-for forming a groove of varying size for the reception of a wire; means for limiting the oscillation of said member; and a rotatory member provided with adjustable means for" gripping that portion of the wire extending-from said groove. 7

4. In a wire bending device; the combination of a main frame member; an oscillatory member adjustable longitudinally of said main frame member and provided with" a groove for the reception of awire; and arotatory member located beyond the freee'nd of said oscillatory member and provided with means for gripping'that portion of the wire extending from said groove.

5. In a wire bending device; the combination o'fa main frame member; an oscillatory member provided with a groove for "the ,reception of a wire; adjustable means for limiting the oscillation of said member; and: a rotatory member provided with means for grippingthat portion of the wire extending from said groove. i

6. In a wire bending device,; the combination of'a main frame member'forme'd with a circular depression and a bore coaxial there'- with a rotatory member havinga cylindrical stem mounted in said bore and formed with an enlarged cylindrical portion mounted in said depression; a central pin projecting from said cylindrical portion; a second pin mounted adjacently to said central pin; a handle secured to said stem; and oscilla torily mounted guiding meanson said frame which are adjustable for receiving wires of varying sizes. a

7. In a wire bending device, the combination of a main frame memberform'ed with a circular depression and a bore coaxial therewith; a rotatory memberformed with an enlarged circular portion mounted in said-depression, said rotatory member having a re- 12o movable cylindrical stem mounted in said bore and one end thereof projecting from said. cylindrical portion; a pin mounted upon said rotatory member adjacentlyj'to said projecting stem; a handle secured-to i mounted on said frame and adjustable in the longitudinal vertical plane containing the wires axis.

8. In a wire bending device, the combination of a main frame member formed with a circular depression, and a bore coaxial therewith; a rotatory member having a cylindrical stem mounted in said bore and formed with an enlarged cylindrical portion mounted in said depression; a central pin projecting from said cylindrical member; an adjustv able pin mounted adjacent to said central pin; a handle secured to said stem and upon the end opposite that upon which said cylindrical member is secured; and oscillatory means on said frame for guiding the wire, which means in conjunction with said frame are adapted to allow the wire to have a limited movement in a direction transverse with respect to its axis.

9Signed by me, this 30th day of December, 1 l6.

MELVIN D. KILMER.

Copies of this patent may be obtained for five cents each, by addressing the "Commissioner of latentl,

Washington, D. G." 

